Power-Line (TDF)
• Direct Drive Twin Fan (Run & standby)
• Backward Curved Centrifugal Impellors
• Operating temperatures up to 40°C
• Performance range up to 2.72m3/s
• Static Pressure Development up to 500pa
• Speed Controllable
• Quality assured to BS EN ISO 9001
• Performance listed to BS 848 Part 1
The TDF range are twin backward curved centrifugal impellors (Run & Standby) designed for induct installations.
Casings
Robustly constructed from galvanised sheet steel, fitted with proprietry flanges at each end in accordance with DW142.
Impellers
Aerodynamically designed backward curved constructed from aluminium or steel plate depending on size and rotational speed.
The rotor of the external rotor motor forms the hub of the impeller. Rotors and impellers are factory matched and statically and dynamically balanced on precision machines according to VDI2060 quality class Q6.3.
Motors
Maintenance free external rotor motors with generously dimensioned sealed for life ball bearings encapsulating a high temperature lubricant. The bearings allow for the fan to be mounted at any angle.
Insulation is Class B with the enclosure IP44 according to DIN 40050. The electrical design corresponds to VDE 0530/12.84. The motors are suitable for operation in atmosphere up to 95% RH and ambients up to 40°C.
Motors are wound to suit either 240V 50HZ 1PH or 415V 50HZ 3PH electrical supply. All motors are fitted with Hot Spot protection by means of a thermal contact switch incorporated in the motor windings to prevent motor damage due to overloading. As the motors have a special torque-speed characteristic they are ideally suitable for speed control by voltage reduction.
Performance
Performance figures given have been tested using installation Type ‘D’ in accordance with BS848 Part 1 1980 and BS848 Part 2 1985. The aerodynamic performance data being to tolerance Class ‘C’ as recommended by BSI C.A.M.E Scheme, Certification No CM005.
Sound Levels
Sound Levels are measured in a reverberent chamber in accordance with BS848 Part 2. Sound level measurements are taken with the fan operating at 20% of its maxium pressure development.
Published dBA figures are sound pressure levels measured at a distance of 3m with spherical sound level propagation. It is included for comparative purposes only and the real sound level experienced will depend on the acoustic characteristics of the area being served.
Quality Assurance
Design and manufacture is in accordance with Quality Assured to BS EN ISO9001
DIMENSIONS:
Unit | A | B | C | D | E | F | G | H | J | K | L | N | KG |
TDF220 | 375 | 330 | 570 | 115 | 400 | 355 | 25 | 9 | 40 | 150 | 115 | 110 | 24 |
TDF250 | 375 | 330 | 570 | 115 | 400 | 355 | 25 | 9 | 40 | 150 | 115 | 110 | 26 |
TDF280 | 425 | 540 | 780 | 190 | 450 | 565 | 25 | 9 | 40 | 150 | 115 | 175 | 40 |
TDF320 | 500 | 655 | 900 | 230 | 525 | 680 | 25 | 9 | 50 | 150 | 130 | 220 | 65 |
TDF380 | 550 | 745 | 1015 | 260 | 585 | 780 | 35 | 11 | 50 | 160 | 130 | 240 | 75 |
TDF420 | 625 | 830 | 1130 | 295 | 600 | 865 | 35 | 11 | 50 | 230 | 230 | 220 | 103 |
TDF480 | 700 | 925 | 1250 | 325 | 735 | 960 | 35 | 11 | 65 | 230 | 230 | 300 | 112 |
TDF520 | 775 | 1055 | 1385 | 355 | 810 | 1090 | 35 | 11 | 50 | 230 | 230 | 350 | 145 |
TDF600 | 850 | 1200 | 1530 | 400 | 885 | 1235 | 35 | 11 | 55 | 230 | 230 | 400 | 180 |
TDF700 | 950 | 1280 | 1675 | 430 | 985 | 1295 | 35 | 11 | 55 | 230 | 230 | 450 | 203 |

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The ITC model provides automatic changeover on fan failure as well as enabling a manual selection of either fan for duty sharing or test purposes. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals.

The ITC-DS model (Duty sharing). Incorporates a timing mechanism which operates alternate fans on 12 or 24 hour intervals, thus ensuring the extended life of the fan bearings. The controller also provides automatic changeover on fan failure along with the facility for manual selection of either fan. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals

The RSC multi-speed control system offers 2 speed fan versatility eg. Energy Management for night-time setback. Can be used in conjunction with Vent-Axia ITC, ITC-DS controllers using 5 step auto-transformer speed controllers for speed selection. Uses 24V output from ITC controller. Dimensions: 86mm x 178mm x 100mm (Width x Height x Depth)

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ESTIMATED RUNNING COSTS
Calculate estimated running costs for this product using the tool below.
For average costs*, leave the default values in place or enter your own figures in the boxes to recalculate.
Where a product has multi speeds, a typical installation has been used for the below calculations. *Running cost does not include the use of the heater on the heater model
Based on the inputted figures, estimated running costs would be:
Overview
The TDF range are twin backward curved centrifugal impellors (Run & Standby) designed for induct installations.
Casings
Robustly constructed from galvanised sheet steel, fitted with proprietry flanges at each end in accordance with DW142.
Impellers
Aerodynamically designed backward curved constructed from aluminium or steel plate depending on size and rotational speed.
The rotor of the external rotor motor forms the hub of the impeller. Rotors and impellers are factory matched and statically and dynamically balanced on precision machines according to VDI2060 quality class Q6.3.
Motors
Maintenance free external rotor motors with generously dimensioned sealed for life ball bearings encapsulating a high temperature lubricant. The bearings allow for the fan to be mounted at any angle.
Insulation is Class B with the enclosure IP44 according to DIN 40050. The electrical design corresponds to VDE 0530/12.84. The motors are suitable for operation in atmosphere up to 95% RH and ambients up to 40°C.
Motors are wound to suit either 240V 50HZ 1PH or 415V 50HZ 3PH electrical supply. All motors are fitted with Hot Spot protection by means of a thermal contact switch incorporated in the motor windings to prevent motor damage due to overloading. As the motors have a special torque-speed characteristic they are ideally suitable for speed control by voltage reduction.
Performance
Performance figures given have been tested using installation Type ‘D’ in accordance with BS848 Part 1 1980 and BS848 Part 2 1985. The aerodynamic performance data being to tolerance Class ‘C’ as recommended by BSI C.A.M.E Scheme, Certification No CM005.
Sound Levels
Sound Levels are measured in a reverberent chamber in accordance with BS848 Part 2. Sound level measurements are taken with the fan operating at 20% of its maxium pressure development.
Published dBA figures are sound pressure levels measured at a distance of 3m with spherical sound level propagation. It is included for comparative purposes only and the real sound level experienced will depend on the acoustic characteristics of the area being served.
Quality Assurance
Design and manufacture is in accordance with Quality Assured to BS EN ISO9001
Technical
DIMENSIONS:
Unit | A | B | C | D | E | F | G | H | J | K | L | N | KG |
TDF220 | 375 | 330 | 570 | 115 | 400 | 355 | 25 | 9 | 40 | 150 | 115 | 110 | 24 |
TDF250 | 375 | 330 | 570 | 115 | 400 | 355 | 25 | 9 | 40 | 150 | 115 | 110 | 26 |
TDF280 | 425 | 540 | 780 | 190 | 450 | 565 | 25 | 9 | 40 | 150 | 115 | 175 | 40 |
TDF320 | 500 | 655 | 900 | 230 | 525 | 680 | 25 | 9 | 50 | 150 | 130 | 220 | 65 |
TDF380 | 550 | 745 | 1015 | 260 | 585 | 780 | 35 | 11 | 50 | 160 | 130 | 240 | 75 |
TDF420 | 625 | 830 | 1130 | 295 | 600 | 865 | 35 | 11 | 50 | 230 | 230 | 220 | 103 |
TDF480 | 700 | 925 | 1250 | 325 | 735 | 960 | 35 | 11 | 65 | 230 | 230 | 300 | 112 |
TDF520 | 775 | 1055 | 1385 | 355 | 810 | 1090 | 35 | 11 | 50 | 230 | 230 | 350 | 145 |
TDF600 | 850 | 1200 | 1530 | 400 | 885 | 1235 | 35 | 11 | 55 | 230 | 230 | 400 | 180 |
TDF700 | 950 | 1280 | 1675 | 430 | 985 | 1295 | 35 | 11 | 55 | 230 | 230 | 450 | 203 |
Accessories

Please click here for the latest product alternative
The ITC model provides automatic changeover on fan failure as well as enabling a manual selection of either fan for duty sharing or test purposes. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals.

The ITC-DS model (Duty sharing). Incorporates a timing mechanism which operates alternate fans on 12 or 24 hour intervals, thus ensuring the extended life of the fan bearings. The controller also provides automatic changeover on fan failure along with the facility for manual selection of either fan. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals

The RSC multi-speed control system offers 2 speed fan versatility eg. Energy Management for night-time setback. Can be used in conjunction with Vent-Axia ITC, ITC-DS controllers using 5 step auto-transformer speed controllers for speed selection. Uses 24V output from ITC controller. Dimensions: 86mm x 178mm x 100mm (Width x Height x Depth)
